Solid-liquid connecting method of aluminum materials

Abstract

The invention discloses a solid-liquid connecting method of aluminum materials. The solid-liquid connecting method comprises the following steps of carrying out surface zinc layer protection treatment on a to-be-connected solid-state aluminum alloy preset material; melting and refining to-be-poured aluminum alloy, and obtaining liquid-state pouring aluminum alloy; presetting the to-be-connected solid-state aluminum alloy preset material which is subjected to the surface zinc layer protection treatment in a die cavity; pouring the liquid-state pouring aluminum alloy into the die cavity, and enabling metallurgical bonding to be formed between the to-be-connected solid-state aluminum alloy preset material and the to-be-connected liquid-state pouring aluminum alloy, i.e. completing solid-liquid connection of different kinds of aluminum alloy materials. According to the solid-liquid connecting method of the aluminum materials, disclosed by the invention, a series of problems, such as oxidation, slag inclusion, air suction, hot cracking and composition segregation, which are often caused when a traditional welding method is used for connecting the aluminum alloy are solved, the difficulty that the metallurgical bonding is prevented from being formed by a surface oxidation film is overcome, the composite technological process is simple, the constraint which is limited by the appearance condition is small, the requirement on technological equipment is simple, and gas protection is not needed.

Description

technical field [0001] The invention relates to a connection method between two metals, in particular to a solid-liquid connection method for aluminum materials. Background technique [0002] Due to its excellent characteristics, aluminum and its alloy materials have low density, high specific strength, high specific stiffness, good impact resistance, corrosion resistance, wear resistance, high electrical conductivity, high thermal conductivity, good processing formability and high recycling and regeneration, etc. , are widely used in vehicles, ships, construction, machinery, aerospace and power electronics industries. With the rapid development of industry and the continuous advancement of science and technology, it is difficult for a single material to meet the requirements for comprehensive performance of materials in various fields. Heterogeneous aluminum alloy composite materials can combine the advantages of each component in design, so that they have good comprehensiv...

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Problems solved by technology

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a solid-liquid connection method for aluminum materials, which solves the problems of oxidation slag inclusion, gas absorption, thermal cracking, and component segregation in the bonding area that are often caused in the existing aluminum alloy connection technology. At the same time, the existence of the oxide film will seriously affect a series of problems such as the interaction between the two metals and the performance of the connecting parts, so that the metallurgical bond between the two aluminum alloys is formed and has excellent mechanical properties.

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